Traffic radar with digital signal processing
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 18, 1996
Grant Date -
N/A
app pub date -
Jun 30, 1994
filing date -
Jun 30, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A traffic radar processes Doppler return information by analysis of the received frequency spectrum in order to improve target identification and minimize interference and unwanted harmonics. Digital signal processing including transformation of the return information into the frequency domain is employed to provide multiple modes of operation including a stationary mode where either the strongest or the fastest Doppler return signal may be selectively recognized, and moving modes for monitoring traffic moving in both the opposite direction and the same direction as the patrol vehicle. In the moving modes either strongest or fastest signal processing may be elected, and operation when the patrol and target vehicles are moving in the same direction is provided irrespective of whether the patrol vehicle is moving faster or slower than the target vehicle. The speed of the patrol car is determined by recognizing a signature that exhibits an asymmetry due to the cosine effect. Interference and harmonics are detected and suppressed by recognizing unwanted harmonic patterns and eliminating signal magnitudes at the harmonic frequencies.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully